/Engine/Source/Runtime/MovieScene/Public/IMovieScenePlayer.h
Does not clear the existing cache
The guid of the object's binding, or zero guid if it was not found
[FGuid](API\Runtime\Core\Misc\FGuid) FindCachedObjectId ( [UObject](API\Runtime\CoreUObject\UObject\UObject) & InObject, FMovieSceneSequenceIDRef SequenceID )